Design of a high-sensitivity differential Helmholtz photoacoustic cell and its application in methane detection.
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DOI: 10.1364/oe.465161
Abstract: A high-sensitivity differential Helmholtz photoacoustic cell based on multiple reflection was reported, and its performance parameters and gas replacement time were optimized by finite element simulation. To realize the long absorption path of the measured… read more here.
Keywords: helmholtz photoacoustic; high sensitivity; differential helmholtz; detection ... See more keywords